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本文研究了一种新型光伏/光热一体化(PV/T)复合热源热泵热水系统,将多孔扁盒式PV/T集热板与空气源热泵相结合,根据不同控制方式组合成双热源并联、单太阳能和单空气能三种不同运行模式。在室外环境温度28.5℃下,将200 L 30℃热水加热到55℃,研究了加热时间、热水温度、COP等性能的变化规律,结果表明双热源并联运行模式下分别比单太阳能模式和单空气能模式的加热时间缩短了42%和54%,COP分别提高了32.78%和47.64%;同时实验研究了在夏季工况下将200 L水从9∶00循环加热到17∶00过程中系统热性能,探讨了太阳辐射强度、PV/T集热板温度对光电/光热效率的影响,通过实验对比可以得出在热电模式下系统的光电效率η_(pv)比单一光电模式平均高25.8%.
In this paper, a new type of PV / T hybrid heat pump hot water system is studied. The porous flat box PV / T collector plate is combined with the air source heat pump. According to the different control modes, Parallel, single solar and single air can be three different modes of operation. Under the outdoor ambient temperature of 28.5 ℃, 200 L of 30 ℃ hot water was heated to 55 ℃. The variation of heating time, hot water temperature and COP were studied. The results show that compared with single solar energy mode and In the single-air mode, the heating time was shortened by 42% and 54%, respectively, and the COP was increased by 32.78% and 47.64% respectively. Meanwhile, the experimental study was conducted on the heating of 200 L water from 9:00 to 17:00 The effects of solar radiation intensity and PV / T collector temperature on the photo / photothermal efficiency are discussed. The experimental results show that the photovoltaic efficiency η_ (pv) of the system is 25.8% higher than that of the single photo mode %.